The answer is the readers Senses. Because it helps us better imagine the settings as if we were there.
Yeah she ugly any way block her. Yes
Evenness means an equality between two species, or to sets of variables in mathematics, so evenness of mind and temper would be a tranquility or peace between these two parts of your body.
A ten letter word with this meaning is Equanimity.
Definition: mental calmness, composure, and evenness of temper, especially in a difficult situation.
Fiction or Fantasy because obviously no man is going to turn into a monstrous vermin overnight and Gregor is still rational and acts like a human which vermin do not do.